* {
  margin:  0;
  padding: 0;
  box-sizing: border-box;
}，
body, button, code, input, select, textarea {
    font-family: "Microsoft Yahei","微软雅黑",verdana;
    color: #333;
}
a{
    text-decoration: none;
}
ul,li{
    list-style: none;
}
input{
    border: none;
    outline: none;
}


